Prestressed round anchor capable of preventing looseness

Abstract

The utility model relates to the technical field of prestress, in particular to an anti-loosening prestressed round anchor, which is characterized in that a connecting seat is sleeved on an anchor plate, the connecting seat is fixedly arranged at the upper part of an anchor backing plate, a locking cylinder is movably sleeved on the anchor plate, the locking cylinder is rotatably sleeved on the connecting seat through threads, a secondary wedge-caulking mechanism is arranged in the locking cylinder, and the secondary wedge-caulking mechanism is fixed on the anchor backing plate. The elastic clamping rings are movably arranged in annular grooves formed in the multiple first clamping pieces in a sleeved mode respectively, the second clamping pieces are fixedly arranged on the multiple first clamping pieces respectively, each second clamping piece is composed of two matched second clamping pieces, the second clamping pieces are matched with the secondary wedge-caulking mechanism, and double locking of prestressed tendons can be achieved according to the wedge-caulking principle. And the loosening phenomenon of the prestressed tendons and the round anchors is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of prestressed steel, in particular to a prestressed round anchor capable of preventing loosening. Background Art

[0002] Prestressed circular anchors are often used in bridge construction. They are installed at the ends of prestressed tendons and can always keep the prestressed tendons anchored during the prestressing process. However, if the tensioning force on the prestressed tendons is too large, the friction generated by the clamping between the clip and the prestressed tendons will not be enough to clamp the prestressed tendons firmly, which can easily cause the prestressed tendons to loosen from the circular anchor. Therefore, there is an urgent need for a prestressed circular anchor that can prevent loosening. Utility Model Content

[0003] The purpose of the utility model is to provide a prestressed circular anchor with a reasonable design and anti-loosening function to solve the above problems in view of the defects and shortcomings of the existing technology.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: it comprises an anchor plate, a No. 1 clamping piece, an anchor pad and a No. 1 spiral rib, wherein the No. 1 clamping piece is provided in a plurality of mounting openings on the anchor plate, and the No. 1 clamping piece is composed of two matching No. 1 clips, and the anchor pad is provided at the lower portion of the anchor plate, and the No. 1 spiral rib is sleeved at the lower portion of the anchor pad;

[0005] It also contains:

[0006] The connecting seat is sleeved on the anchor plate, and the connecting seat is fixedly arranged on the upper part of the anchor pad. The anchor plate is movably sleeved with a locking cylinder, and the locking cylinder is sleeved on the connecting seat through a threaded rotation, and a secondary wedging mechanism is provided in the locking cylinder;

[0007] Elastic clasps, there are multiple elastic clasps, each movably sleeved in an annular groove formed on multiple No. 1 clamping pieces;

[0008] The No. 2 clamping piece is a plurality of No. 2 clamping pieces, which are respectively fixedly arranged on a plurality of No. 1 clamping pieces. The No. 2 clamping piece is composed of two matching No. 2 clamping pieces, and the No. 2 clamping pieces are matched with the secondary wedging mechanism.

[0009] Furthermore, the secondary wedging mechanism includes:

[0010] A second spiral rib, the second spiral rib being fixedly disposed in the locking cylinder, and a movable frame being fixedly disposed at the lower end of the second spiral rib;

[0011] The contact plate is rotatably arranged in the movable frame, and the second clamping piece is movably inserted into the wedge-tightening hole opened in the contact plate.

[0012] Furthermore, a plurality of guide blocks are distributed on the outer ring wall of the movable frame at equal rounded corners, and the guide blocks are movably arranged in guide grooves provided on the inner wall of the locking cylinder.

[0013] Furthermore, a plurality of reinforcing ribs are distributed on the outer ring wall of the locking cylinder at equal rounded corners.

[0014] Furthermore, anti-slip grooves are provided on the inner walls of the No. 1 clamping piece and the No. 2 clamping piece.

[0015] Compared with the prior art, the beneficial effect of the present invention is that the prestressed round anchor for preventing loosening described in the present invention can realize double locking of the prestressed tendons by utilizing the wedging principle, thereby avoiding loosening of the prestressed tendons and the round anchor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 It is an exploded view of parts of the present utility model.

[0018] Figure 3 yes Figure 2 Enlarged view of part A in .

[0019] Figure 4 It is a structural schematic diagram of a No. 1 clip, a No. 2 clip and an elastic clamping ring in the utility model.

[0020] Description of reference numerals:

[0021] Anchor plate 1, clamping piece No. 1 2, clip No. 1 2-1, anchor plate 3, spiral rib No. 1 4, connecting seat 5, locking cylinder 6, secondary wedging mechanism 7, spiral rib No. 2 7-1, movable frame 7-2, contact plate 7-3, wedging hole 7-4, elastic snap ring 8, clamping piece No. 2 9, clip No. 2 9-1, guide block 10, reinforcing rib 11, anti-slip groove 12. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. The preferred embodiments in the description are only used as examples. All other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.

[0023] like Figure 1-Figure 4 As shown, this specific embodiment adopts the following technical solution: it includes an anchor plate 1, a No. 1 clamping piece 2, an anchor pad 3 and a No. 1 spiral rib 4. Several installation openings opened on the anchor plate 1 are all provided with a No. 1 clamping piece 2 in abutment with each other. The No. 1 clamping piece 2 is composed of two matching No. 1 clips 2-1. The lower part of the anchor plate 1 is provided with an anchor pad 3 in abutment with each other. The lower part of the anchor pad 3 is provided with a No. 1 spiral rib 4.

[0024] It also contains:

[0025] The connecting seat 5 is sleeved on the anchor plate 1 and fixedly arranged on the upper part of the anchor plate 3. A locking cylinder 6 is movably sleeved on the anchor plate 1, and the locking cylinder 6 is sleeved on the connecting seat 5 by a threaded rotation. A secondary wedging mechanism 7 is provided in the locking cylinder 6. Several reinforcing ribs 11 are distributed on the outer ring wall of the locking cylinder 6 at equal fillets. The reinforcing ribs 11 can improve the structural strength of the locking cylinder 6, thereby enhancing the load-bearing performance of the locking cylinder 6;

[0026] Elastic snap rings 8, there are several elastic snap rings 8, which are movably sleeved in the annular grooves provided on the several No. 1 clamping members 2;

[0027] No. 2 clamping piece 9, the No. 2 clamping piece 9 is several, respectively fixedly set on several No. 1 clamping pieces 2, the No. 2 clamping piece 9 is composed of two matching No. 2 clips 9-1, the No. 2 clips 9-1 are matched with the secondary wedging mechanism 7, and the inner walls of the No. 1 clamping piece 2 and the No. 2 clamping piece 9 are provided with anti-slip grooves 12. The anti-slip grooves 12 can further improve the friction generated by the No. 1 clamping piece 2 and the No. 2 clamping piece 9 in the process of clamping the prestressed tendon;

[0028] The secondary wedging mechanism 7 comprises:

[0029] The second spiral rib 7-1 is fixedly arranged in the locking cylinder 6. The lower end of the second spiral rib 7-1 is fixedly provided with a movable frame 7-2. Several guide blocks 10 are distributed on the outer ring wall of the movable frame 7-2 at equal fillets. The guide blocks 10 are movably arranged in the guide grooves provided on the inner wall of the locking cylinder 6. The guide blocks 10 can provide guidance for the movement of the movable frame 7-2, thereby improving the stability of the movable frame 7-2 in the locking cylinder 6;

[0030] The contact plate 7-3 is rotatably arranged in the movable frame 7-2, and the second clamping member 9 is movably inserted into the wedging hole 7-4 opened on the contact plate 7-3.

[0031] When using the present invention, after the prestressed tendon passes through the installation opening, the No. 1 clamping piece 2 and the No. 2 clamping piece 9 are put on the prestressed tendon, and the No. 1 clamping piece 2 is inserted into the installation opening, and then the prestressed tendon is tensioned. Thereafter, the wedging principle is utilized to realize the clamping and locking of the prestressed tendon by the No. 1 clamping piece 2, and then the locking cylinder 6 is put on the anchor plate 1, and the No. 2 clamping piece 9 is inserted into the wedging hole 7-4, and the locking cylinder 6 is connected to the connecting seat 5 through a thread. At this time, the thrust applied to the movable frame 7-2 by the No. 2 spiral tendon 7-1 can make the contact plate 7-3 move toward the anchor plate 1, and the wedging principle can be utilized again to realize the clamping and locking of the prestressed tendon by the No. 2 clamping piece 9.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] 1. Through the cooperation of the connecting seat 5, the locking cylinder 6, the secondary wedging mechanism 7 and the second clamping piece 9, the wedging principle can be used to achieve secondary locking of the prestressed tendons, thereby preventing the prestressed tendons and the round anchor from loosening and improving the anti-loosening performance between the prestressed tendons and the round anchor;

[0034] 2. The structural strength of the locking cylinder 6 can be improved by reinforcing the ribs 11, thereby enhancing the load-bearing performance of the locking cylinder 6.

[0035] For those skilled in the art, they can modify the technical solutions described in the aforementioned embodiments and make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. A prestressed circular anchor for preventing loosening, comprising an anchor plate (1), a No. 1 clamping member (2), an anchor pad (3) and a No. 1 spiral rib (4); the No. 1 clamping member (2) is disposed in abutment with each other in a plurality of mounting openings provided on the anchor plate (1); the No. 1 clamping member (2) is composed of two matching No. 1 clips (2-1); the anchor pad (3) is disposed in abutment with the lower portion of the anchor plate (1); and the No. 1 spiral rib (4) is sleeved on the lower portion of the anchor pad (3); Its characteristics are: It also contains: A connecting seat (5) is sleeved on the anchor plate (1), and the connecting seat (5) is fixedly arranged on the upper part of the anchor pad (3); a locking cylinder (6) is movably sleeved on the anchor plate (1), and the locking cylinder (6) is sleeved on the connecting seat (5) by means of a threaded rotation; a secondary wedging mechanism (7) is provided in the locking cylinder (6); Elastic snap rings (8), the elastic snap rings (8) are in plurality and are movably sleeved in the annular grooves provided on the plurality of No. 1 clamping members (2); The second clamping piece (9) is a plurality of the second clamping pieces (9) which are respectively fixedly arranged on the plurality of the first clamping pieces (2). The second clamping piece (9) is composed of two matched second clamping pieces (9-1). The second clamping piece (9-1) is matched with the secondary wedging mechanism (7).

2. The prestressed round anchor for preventing loosening according to claim 1, characterized in that: The secondary wedging mechanism (7) comprises: A second spiral rib (7-1), wherein the second spiral rib (7-1) is fixedly arranged in the locking cylinder (6), and a movable frame (7-2) is fixedly arranged at the lower end of the second spiral rib (7-1); The contact plate (7-3) is rotatably arranged in the movable frame (7-2), and the second clamping piece (9) is movably inserted into the wedge-tightening hole (7-4) opened on the contact plate (7-3).

3. The prestressed round anchor for preventing loosening according to claim 2, characterized in that: Several guide blocks (10) are distributed on the outer ring wall of the movable frame (7-2) at equal rounded corners. The guide blocks (10) are movably arranged in guide grooves provided on the inner wall of the locking cylinder (6).

4. The prestressed round anchor for preventing loosening according to claim 1, characterized in that: Several reinforcing ribs (11) are distributed on the outer ring wall of the locking cylinder (6) at equal rounded corners.

5. The prestressed round anchor for preventing loosening according to claim 1, characterized in that: Anti-slip grooves (12) are provided on the inner walls of the No. 1 clamping piece (2) and the No. 2 clamping piece (9).

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